Peep tuner and draw timer

Abstract

A peep sight is a tubular element installed in a bowstring. When drawn, the natural twist of the bowstring may fail to align the peep sight with the other sighting structures on the bow. The invention provides a simple, low-cost, and easily installed bead which, when inserted into a bowstring in the vicinity of the peep sight, may be easily adjusted to bring the peep sight into proper alignment. Once properly adjusted and secured to the bowstring, the inventive peep tuner acts to reliably and repeatably counteract the change in helical twist of the bowstring strands and bring the peep sight to its desired orientation when the bowstring is fully drawn. The bead may also be installed elsewhere along the bowstring as a draw timer to take up excess bowstring length which would pay out unequally during a draw if left uncorrected.

What is claimed is: 
     
       1. A bowstring peep tuner comprising
 a compression resistant material, 
 a solid column extending along a longitudinal axis from a first end to a second end, 
 said column having a cross section with
 a first transverse column thickness in a first transverse direction orthogonal to said longitudinal axis, and a second transverse column thickness in a second transverse direction orthogonal to both said longitudinal axis and said first transverse direction, 
 
 with said first and second ends further comprising respectively a first and second anvil each having
 a first width dimension in said first transverse direction greater than said first transverse column thickness and 
 a second width dimension in said second transverse direction greater than said second transverse column thickness, and 
 
 with an end face of said first anvil further comprising a first groove, and an end face of said second anvil further comprising a second groove. 
 
     
     
       2. The bowstring peep tuner of  claim 1 , wherein said first transverse column thickness is greater than said second transverse column thickness. 
     
     
       3. The bowstring peep tuner of  claim 1 , wherein said first groove in said end face of said first anvil extends along said first transverse direction, and second groove in said end face of said second anvil extends along said first transverse direction. 
     
     
       4. The bowstring peep tuner of  claim 1 , wherein a first end of said first groove in said end face of said first anvil meets with a first notch in a perimeter of said first anvil, with said first notch extending parallel to said longitudinal axis. 
     
     
       5. The bowstring peep tuner of  claim 4 , wherein a second end of said first groove in said end face of said first anvil meets with a second notch also extending parallel to said longitudinal axis. 
     
     
       6. The bowstring peep tuner of  claim 4 , wherein a first end of said second groove in said end face of said second anvil meets with a third notch in a perimeter of said second anvil, with said third notch extending parallel to said longitudinal axis, in alignment with said first notch in said first anvil. 
     
     
       7. The bowstring peep tuner of  claim 1 , wherein said cross section of said solid column comprises a shape selected from a set of shapes consisting of:
 a circle, a polygon, a square, a rectangle, an oval, an ellipse, a lozenge, a hexagon, and a rhombus. 
 
     
     
       8. The bowstring peep tuner of  claim 1 , wherein said compression resistant material comprises a material selected from a set of materials consisting of:
 a thermoplastic, an acrylonitrile butadiene styrene, a nylon, a polyamide, 4,6 polyamide, 6,6 polyamide, a polypropylene, Delrin®, acetal, or polyoxymethylene, polyacetal, or polyformaldehyde, a metal, wood, and bone. 
 
     
     
       9. An archery bowstring assembly comprising:
 a plurality of fibers lain helically along a length of a bowstring, 
 said fibers bifurcated around a peep sight at a first site along said length of said bowstring, and 
 said fibers bifurcated around a peep tuner at a second site along said length of said bowstring, 
 wherein said peep tuner further comprises
 a compression resistant material, 
 a solid column extending along a longitudinal axis from a first end to a second end, 
 said column having a cross section with
 a first transverse column thickness in a first transverse direction orthogonal to said longitudinal axis, and a second transverse column thickness in a second transverse direction orthogonal to both said longitudinal axis and said first transverse direction, 
 
 with said first and second ends further comprising respectively a first and second anvil each having
 a first width dimension in said first transverse direction greater than said first transverse column thickness and 
 a second width dimension in said second transverse direction greater than said second transverse column thickness, and 
 
 with an end face of said first anvil further comprising a first groove, and an end face of said second anvil further comprising a second groove. 
 
 
     
     
       10. The archery bowstring assembly of  claim 9 , further comprising serving secured to said bowstring and received within said first groove of said first anvil. 
     
     
       11. The archery bowstring assembly of  claim 9 , wherein
 said first groove in said end face of said first anvil of peep tuner extends along said first transverse direction, and second groove in said end face of said second anvil extends along said first transverse direction, and 
 further comprising serving secured to said bowstring and received within said first groove of said first anvil and said second groove of said second anvil. 
 
     
     
       12. The archery bowstring assembly of  claim 11 , wherein a first end of said first groove in said end face of said first anvil of said peep tuner meets with a first notch in a perimeter of said first anvil, with said first notch extending parallel to said longitudinal axis, and
 further comprising serving secured to said bowstring and received within said first groove of said first anvil and said first notch of said first anvil. 
 
     
     
       13. The archery bowstring assembly of  claim 9 , wherein a cross section of said solid column of said peep tuner comprises a shape selected from a set of shapes consisting of:
 a circle, a polygon, a square, a rectangle, an oval, an ellipse, a lozenge, a hexagon, and a rhombus. 
 
     
     
       14. The archery bowstring assembly of  claim 9 , wherein said compression resistant material comprises a material selected from a set of materials consisting of:
 a thermoplastic, an acrylonitrile butadiene styrene, a nylon, a polyamide, 4,6 polyamide, 6,6 polyamide, a polypropylene, Delrin®, acetal, or polyoxymethylene, polyacetal, or polyformaldehyde, a metal, wood, and bone. 
 
     
     
       15. The archery bowstring assembly of  claim 9 , further comprising serving secured to said bowstring at a point between said first site and said second site. 
     
     
       16. The archery bowstring assembly of  claim 9 , further comprising serving secured to said bowstring at a point within 3 inches from said second site.